Performance based investigations of structural systems under fire

Filippo Gentili, Chiara Crosti, Luisa Giuliani

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    Abstract

    Prescriptive measures and procedures developed over the past here are mostly aimed at preventing structural failures of single elements for the time required for the evacuation. The response to fire and fire effects of the structural system as a whole remains often unknown and the survival of the construction after this time cannot always be granted. This is even more true in case of unaccounted events like human errors or rare but severe occurrence like a fire after explosion, which cannot be contemplated in the usual design. Even if a structure could be hardly designed to resist fully integer all these kinds of events, the mitigation of possible collapse induced by fire should be achieved. In this respect, a performance-based investigation of the structure aimed at highlight fire effects and fire-induced collapse mechanisms becomes of interest. In the paper collapse mechanisms of some simple structures are presented and discussed, with particular attention to methodological aspects. The effects of different assumptions in the modeling and in the definition of the collapse are highlighted, as critical aspects of a performance-based investigation.
    Original languageEnglish
    Title of host publicationAdvances and Trends in Structural Engineering : SEMC 2010 Proceedings
    Number of pages388
    Place of PublicationLondon
    PublisherTaylor & Francis
    Publication date2010
    Edition1st
    ISBN (Print)9780415584722
    Publication statusPublished - 2010
    Event4th International conference on Structural Engineering, Mechanics and Computation: Special Session on Fire Safety - Cape Town, South Africa
    Duration: 6 Sept 20108 Sept 2010
    Conference number: 4
    http://www.semc2010.uct.ac.za/

    Conference

    Conference4th International conference on Structural Engineering, Mechanics and Computation
    Number4
    Country/TerritorySouth Africa
    CityCape Town
    Period06/09/201008/09/2010
    Internet address

    Keywords

    • Fire safety, Performance-based fire design (PBFD), Fire-induced collapses, Catenary action, Sway and non-sway collapse.

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